Plabonte, what he is referring to is statistical information that has indicated gay couples have more disposable income (on average) than straight couples. I couldn't direct you to a specific source, but I have seen several articles quoting those stats.
With regards to the marriage rights... why shouldn't they be afforded the same rights as other citizens?!? With the institution being based in religion, they could easily start their own religion or become part of an exisitng one that embraces gay marriage. You could spend the next 1000 years fighting over which religeous belief is right or wrong and never figure it out.
Becuase it has become a governmental issue with the tax breaks and laws surrounding marriage and married couples, they should, as tax payers, be afforded the same rights and opportunities as any other citizen.
People who are gay want to get married for the same reasons straight people do... for love, commitment, filing joint tax returns... we can't deny them that right because of the lifestyle they live (legal lifestyle by the way).